Two things you might sleep on with rookie free agent linebacker Micah Johnson: his pass-coverage ability and his mobility.

Johnson, signed in the wake of fourth-round draft pick A.J. Edds' season-ending torn knee ligament (Edds went under Dr. James Andrews' knife Tuesday), didn't clock the most impressive 40-yard dash time at his pro day.

Johnson said his best time was 4.78. Other reports said 4.84 and 4.92.

``You know, I'm definitely more a football player. Straight ahead speed isn't my strong point. My change of direction is my best -- with the agility shuttle, I ran a 4.21. I consider myself more a football player. It may affect people in the draft, but the ones who can play football last longest, I think.''

Johnson has little experience in the 3-4 defense. At the University of Kentucky, Johnson played in a 4-3 defense, which gave him few pass coverage responsibilities.

However, because pass coverage was expected to be Edds' role at inside linebacker, Johnson has had to add something new to his repertoire.

``It's not that I couldn't do it, I was just never asked to do it so I'm excited to show I can do it,'' Johnson said.